Your Reliable 40A Relay Manufacturer in Quality
As simple electromagnetic switches like relays gain wider adoption, the fooocles 40A relay has emerged as one of the top choices for most users. Amidst significant fluctuations in raw material costs, we remain committed to maintaining the highest quality in contacts and coils, offering customers genuine pricing without compromising on materials that could jeopardize their projects.
All contacts in our 40 amp relays utilize AgSnO or even AgSnO In, extending electrical lifespan and preventing contact sticking. Simultaneously, QA-155 or even QA-180 enameled wire is employed to ensure sufficient temperature rise margin. Pins are made of brass or even pure copper for stable conductivity and heat dissipation. All housing materials are flame-retardant.
40 Amp Relay Series
JD1912 automotive relay, 40a car relay for auto electrical system.
The perfect integration of relays and waterproof enclosures.
Plastic backrest auto relay for air conditioning.
Open frame car relays are available in US and EU series.
Skirted auto relay provide better connection protection
AgSnO2In contact auto relay for high amp circuit
Top Features of Our 40 Amp Relay
Our relays utilize silver alloy contacts, effectively increasing the number and frequency of operations.
We use high quality enameled wire to wind the QA-155 coil on Foocles automatic winding machines.
Foocles offers a wide selection of 40 amp relays in various configurations, including waterproof, LED-indicated, fuse-protected versions and more.
We have been deeply engaged in the Auto relay field for 18 years, possessing extensive experience and equipment to meet custom requirements.
We have obtained IATF 16949 certification, and our products have also passed CE, UL, FCC, and other certifications.
Our 8 fully automated and 15 custom designed production lines deliver a daily output of 150,000 automotive relays.
Foocles All Rounder Auto Relay
Our 40 amp relays provide reliable make, break and switching for almost every vehicle types — from passenger cars and SUVs to commercial vans, trucks, and heavy construction equipment. Our automotive relays are standard components in fuse relay boxes and wiring harnesses, where they switch and control devices like speakers, pumps, heats, injectors, fans and more.
Automotive Relay High-Tech Enterprise
Since 2008, we have grown steadily to become a leading relay manufacturer certified under the IATF 16949 standard, with over 20 relay production lines and a workforce of more than 100 employees. Our products have obtained various certifications, including CE and UL, and 40 amp relays account for the largest share of our product lineup.
Customization for 40 Amp Relay
We offer customization of electrical components—including the addition of resistors, diodes, and fuses—to enhance auto relay reliability. We also provide structural customization—such as mounting brackets, pin lengths, and housing materials—to ensure the car relays meet specific application requirements.
If you have any other customization needs, please feel free to contact us. With our years of experience in relay production and development, we are confident we can provide you with a customized solution that meets your expectations.
40A Relay Module Types
Foocles car relays are typically installed in locations such as wiring harnesses and box modules to provide switching functionality. This allows for more complex and diverse control logic. Here are the applications we can provide.
Implementing forward and reverse functions using a combination of relays.
Easily combine the number of relays and fuses you need and connect them.
The control panel and wiring are pre-connected, so it’s ready to use right out of the box.
Pre-wired, with customizable control methods and content.
More About 40 Amp Relays
- Wiring Diagram
- Gallery
Customer Views
I’ll write my impressions when I install it. So far it looks great.
CroatiaToure MamadouIt is indeed a shop recommended by many friends, durable and made of excellent materials.
South KoreaGecko Lee
Our 40 amp relay series includes options such as normally open, normally closed and changover versions.
Since 12V is the standard voltage, and a 40A current provides sufficient safety margin to power most loads.
This usually means the relay has a contact rating of 40A on the NO side and 30A on the NC side.
It would be best if you could tell us your exact requirements for the relays so we can give you an accurate quote.
Yes, this method is safe and leaves some margin, making it more reliable.
In a typical automotive environment, the relay can operate more than 80,000 times.
